Fix Procedure level queue

[KLarpen]

Closes: #1945

API endpoint local queue params not working at all. I had investigate that the problem in Procedure class and originated from commit "Improve Procedure class PR-URL: #1569 " 434e6c1 Where was applied changes into constructor:

• Object.assign(this, exp); removed
• expected property concurrency of the API endpoint was replaced with queue object containing queue.concurrency
• BUT this.concurrency not assigned directly anymore (as for example done for this.parameters.

However methods enter and leave still checkingthis.concurrency for existance as of today.

impress/lib/procedure.js

Lines 42 to 57 in 4cabe81

	async enter() {
	await this.application.semaphore.enter();
	if (this.concurrency) {
	try {
	await this.semaphore.enter();
	} catch (error) {
	this.application.semaphore.leave();
	throw error;
	}
	}
	}
	leave() {
	this.application.semaphore.leave();
	if (this.concurrency) this.semaphore.leave();
	}

As a result local Semaphore of the Procedure never applied. There should be check for the property this.semaphore instead. It suitable for this purpose because it will be null in case API endpoint doesn't provide queue settings.

Before applying the fix I also added test case lib/procedure queue in /test/procedure.js . By the way I had fixed application stub in Procedure tests to make it comply with updated contract (was changed by #1898).

• tests and linter show no problems (npm t)
• tests are added/updated for bug fixes and new features
• code is properly formatted (npm run fmt)
• description of changes is added in CHANGELOG.md
• update .d.ts typings

[KLarpen]

Please review @tshemsedinov . This fix didn't change contracts and looks like a good candidate for next patch release of Impress.

[tshemsedinov]

LGTM